This is just a dog whistle for the political claim that search results, curated content, or algorithmic feeds are "biased" against a particular viewpoint of the world that they would prefer. Their intent is to use enforcement and investigative powers to make that case publicly and intimidate. The worst case, in their view, is to raise uncertainty about information sources; or, in the best case, to coerce more favorable rankings for their favored information sources. It's a furtherance of our state of domestic information warfare, while they remain in power.